Research & Reviews : Journal of Physics
Volume 9, Issue 1 (2020)
Published
Table of contents
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MRDCI Study of Doublet States of CO+ Ion and Its Spectroscopic Properties
Abstract: The potential energy curves of 2 + , 2 , 2 + , C and 2 D electronic states of CO+ion have been calculated using the multi-reference single and double excitation configurationinteractionmethod (MRDCI). The potential energy curves and transition dipole moment havebeen calculated in the range of 1.6 to 7.0 a0 internuclear distance (R). The calculatedpotential energy curves found to converge smoothly …
Published in Research & Reviews : Journal of Physics · Vol. 9, Issue 1, 2020 Read article
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Quantum dots: Properties, Synthesis and Applications
Abstract: AbstractSemiconductor nanocrystal or quantum dots are Nano particles composed of ten to few hundreds of atoms but confined in a very small region. These are zero dimensional materials and are gaining attention to the researchers because of their interesting optical, electronic and opto-electronic properties compared to bulk. Quantum mechanical confinement plays a key role in determining the peculiar behaviour compared to bulk. Various preparation methods such as chemical, colloidal synthesis, …
Published in Research & Reviews : Journal of Physics · Vol. 9, Issue 1, 2020 Read article
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Synthesis and Characterization of Mg doped ZnFe2O4
Abstract: AbstractSingle-phase Mg-doped ZnFe2O4 nanoparticles with x= 0, 0.3, 0.5, 0.7 have been prepared by the glycol-thermal method without any subsequent calcination. The crystallite size, microstructure and magnetic properties of the prepared nanoparticles were studied using X-ray diffraction (XRD), high resolution scanning electron microscope (TEM), Mössbauer spectroscopy and vibrating sample magnetometer at room temperature. The XRD results revealed the production of a sharp single cubic spinel structure in all the synthesized …
Published in Research & Reviews : Journal of Physics · Vol. 9, Issue 1, 2020 Read article
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Shot Noise for 1550 nm Laser using Balanced Homodyne Detection
Abstract: AbstractSingle photon detectors are indispensable for secure communication in quantum cryptography. Shot noise, a fundamental limit to photodetection occurs due to discreteness of photons. Shot noise plays an important role in telecommunications and optical science because of its property of setting a practical limit to the signal-to-noise ratios. In order to implement BB84 protocol, there is a need to assess appropriate lower bound on experimental errors caused during secure key …
Published in Research & Reviews : Journal of Physics · Vol. 9, Issue 1, 2020 Read article
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Study of DFIG with Rotor Excited Through Inverter and Method of Efficiency Maximization
Abstract: AbstractIn order to extract maximum power output from a DFIG or Doubly fed Induction Generator, maximum mechanical power must be extracted from wind turbine and the losses must be minimized. As the wind speed is not fixed, in order to get maximum power and minimum losses, the d-axis and q-axis rotor currents I*dr and I*qr are controlled according to the changes in wind speed. In this research, Genetic Algorithms are …
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TRIAC Based Light Intensity Controller for Energy Saving
Abstract: AbstractThis project is a basic system which aims to control the intensity of light. It presents a strategy by virtue of which the user can vary the intensity of light. The main issue with lighting systems is that they are either completely ON or completely OFF. There is no provision of partial lighting which can make a system more efficient. The idea is to control intensity of light using TRIAC, …
Published in Research & Reviews : Journal of Physics · Vol. 9, Issue 1, 2020 Read article
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A Study Acoustic Doppler Current Profilers River Survey Measuring Discharge Islah in Dhi Qar Governorate of the Marsh Abu Ziark
Abstract: The use of acoustic Doppler current profilers (ADCPs) from a transferring boat is now in many instances used technique for measuring streamflow. The technology and methods for making ADCP-based discharge measurements are exceptional from the science and techniques used to make ordinary discharge measurements with mechanical meters. Although the ADCP is a precious device for measuring streamflow, it is only correct when used with suitable techniques. This file affords instruction …
Published in Research & Reviews : Journal of Physics · Vol. 9, Issue 1, 2020 · pp. 1–12 Read article
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Study of Molecular Interaction in Organic Ternary Liquid Mixtures Containing Toluene
Abstract: Abstract : Interactions of N, N-dimethylformamide with Cyclohexane and Toluene play an important role in their conformational characteristics. The study of these interactions provides an important insight into the ternary mixture. Through this research work, I make an attempt to study the molecular interactions among the constituent molecules at temperatures 288, 298, 308 and 318 K. From these experimental values, various parameters like adiabatic compressibility, free length, acoustic impedance, surface …
Published in Research & Reviews : Journal of Physics · Vol. 9, Issue 1, 2020 · pp. 13–16 Read article
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Variable Mass of a Test Particle in Copenhagen Problem with Manev-Type Potential
Abstract: AbstractThis study deals the behavior of the motion of a test particle (third body) in the special case of the circular restricted three-body problem when the mass of the test particle varies according to Jeans law and also considered that the equal mass of the primaries generates the Manev-type potentials. This special case of a restricted problem is known as the Copenhagen problem. We derive the equations of motion of …
Published in Research & Reviews : Journal of Physics · Vol. 9, Issue 1, 2020 · pp. 17–27 Read article
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Mixed Order Kinetics Model in Thermoluminescence Obtained with Hyperbolic Heating
Abstract: AbstractMixed Order kinetics model (MOKM) is used to analyze Thermoluminescence (TL) peaks. Dependence of the symmetry factor of TL peaks on MO parameter α=
Published in Research & Reviews : Journal of Physics · Vol. 9, Issue 1, 2020 · pp. 28–32 Read article